Chelsea may hand Arjen Robben a starting berth in tonight's all-Premiership Champions' League semi-final clash with Liverpool at Stamford Bridge.

Boss Jose Mourinho has a full squad to choose from for the big first leg encounter (Sky Sports 1 7.45pm KO).

His main dilemma revolves around whether to play fit-again Robben from the start after the winger made his return to first-team action in the win over Fulham at the weekend.

Bidding to reach the final of the Champions League for the second successive year, Mourinho - who won the competition with Porto last season - is without long-term absentees Wayne Bridge (broken ankle), Scott Parker (broken foot) and Paulo Ferreira (broken foot) while Jiri Jarosik is cup-tied.

Mourinho insists his side must not panic if they are to overcome Liverpool and reach the Champions League final.

Mourinho, who now jokingly admits his ego is "higher than ever" after a glorious first season at Chelsea, is adamant keeping cool will be the key to success for the Premiership champions-elect.

The Portuguese said: "There's no panic. We must not play the first game at home thinking that we have to win or that we have got to get a result to get to the final.

"If we don't win at home, we don't win. We can win the second game. So that is the most important factor - we must not panic for a result at home. You cannot be crazy and chase a result at home."

Liverpool boss Rafael Benitez believes the two legs will re-establish the Reds among Europe's elite 20 years after their last European Cup Final.

The Spaniard, who led Valencia to the UEFA Cup last season, is planning another European-style performance from the Reds, who have surpassed all expectations to get so far in the competition.

He said: "This game will be different to the Premier League and we have confidence that we can beat them. We will try to play a European game rather than a Premiership game."

Benitez expects to have Milan Baros, Xabi Alonso and Luis Garcia back from injury while Harry Kewell is a shock addition to the squad after almost four months of injury woes.

Meanwhile, AC Milan coach Carlo Ancelotti is warning his players against being "over-confident" despite a 2-0 win over PSV Eindhoven last night which edged them closer to a place in the Champions League final next month.

Goals from Andriy Shevchenko and Jon Dahl Tomasson have put the Rossoneri in a strong position ahead of the semi-final second leg at the Philips Stadium, and in with a good chance of reaching the final in Istanbul to face Chelsea or Liverpool.